Martha's Vineyard weather in September 2025

Q: How hot is it in Martha's Vineyard in September?

Daytime temperatures usually reach 22°C in Martha's Vineyard in September, falling to 14°C at night.

Q: How sunny is it in Martha's Vineyard in September?

There are normally 8 hours of bright sunshine each day in Martha's Vineyard in September - that's 60% of daylight hours.

Q: How warm is the sea around Martha's Vineyard in September?

The average sea temperature around Martha's Vineyard in September is 18°C.

Q: Does it rain in Martha's Vineyard in September?

There are usually 8 days with some rain in Martha's Vineyard in September and the average monthly rainfall is 88mm.

Q: What is the chance of a cyclone in Martha's Vineyard in September?

On average less than 1 day in September in Martha's Vineyard is likely to be affected by the passage of one or more tropical storms.

Expect 22°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Martha's Vineyard in September. Check more long-term weather averages for Martha's Vineyard in September before you book your next holiday to Massachusetts in 2025/2026.

22
22°C max day temperature
8
8 hours of sunshine per day
8
8 days with some rainfall
14
14°C min night temperature
12
12 hours of daylight per day
0
No heat & humidity
88
88 mm of monthly rainfall
6
6 (High) UV index
18
18°C sea temperature

More about Martha's Vineyard

Martha's Vineyard by month

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The September weather guide for Massachusetts (Martha's Vineyard) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)

More about the USA

How hot is it in Martha's Vineyard in September?

Daytime temperatures usually reach 22°C in Martha's Vineyard in September, falling to 14°C at night.

How sunny is it in Martha's Vineyard in September?

There are normally 8 hours of bright sunshine each day in Martha's Vineyard in September - that's 60% of daylight hours.

How warm is the sea around Martha's Vineyard in September?

The average sea temperature around Martha's Vineyard in September is 18°C.

Does it rain in Martha's Vineyard in September?

There are usually 8 days with some rain in Martha's Vineyard in September and the average monthly rainfall is 88mm.

What is the chance of a hurricane in Martha's Vineyard in September?

On average less than 1 day in September in Martha's Vineyard is likely to be affected by the passage of one or more tropical storms.

Martha's Vineyard September sunrise & sunset times

Browse the sunrise and sunset times for Martha's Vineyard in September 2025. Select a month to view Martha's Vineyard sunrise and sunset times for the next 12 months.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Date	Sunrise times	Sunset times
Monday, 1st September 2025	05:09	18:15
Monday, 15th September 2025	05:23	17:51
Tuesday, 30th September 2025	05:38	17:25

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Massachusetts - quick facts
Flight time^✝	7.5 hours
Time difference	UK -5 hours
Language(s)	English
Currency	US Dollar
Electricity	A + B plug (120V)
Driving side	Right
Visa^✝	Yes
Why visit?	Culture Nightlife
Tourist info	Visit Massachusetts